Server update, 2016-10-10

With a looming deadline for switching to our new hosting facilities (early November), we didn’t have any release last month, and this one is several days late. But we’ve got some good contributions from chirlu and yvanz, especially in the area of URL validation and cleanup, which we’re finally releasing. Much of yvanz’s work has been to refactor our URL cleanup code so that it’s stricter and more robust. Thanks, chirlu & yvanz! You can view the complete changelog below.